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Finding the Fourth Proportional to 572,843.73, 790,549.37 and 318,194.91

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Solution

The fourth proportional to 572,843.73, 790,549.37 and 318,194.91 is: 439,122.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    572,843.73 : 790,549.37 = 318,194.91 : x
  2. Step 2: Convert to fraction form
    572,843.73/790,549.37 = 318,194.91/x
  3. Step 3: Cross multiply
    572,843.73x = 790,549.37 × 318,194.91
  4. Step 4: Simplify right side
    572,843.73x = 251,548,784,046.73
  5. Step 5: Solve for x
    x = 251,548,784,046.73/572,843.73
  6. Step 6: Final answer
    x = 439,122.87

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.